AS51265 — MASSRESPONSE-AS Mass Response Service GmbH

Network type: residential

AS51265 announces 9 IPv4 prefixes covering 52,992 addresses and 1 IPv6 prefixes.

About this network

MASSRESPONSE-AS is operated by Mass Response Service GmbH, the parent company of the Spusu telecommunications brand.

What it's used for

• The address space carries mobile and fixed dynamic subscriber traffic, evidenced by reverse DNS entries such as mobiledyn-41-66-80-0.mrsn.at and fixeddyn-83-216-36-0.mrsn.at.
• The AS announces 52,992 IPv4 addresses across 16 prefixes and 1 IPv6 prefix, while maintaining 82 observed routing neighbours.
• As a consumer telecommunications provider, the traffic consists of subscriber eyeballs for mobile data and fixed-line internet access in Austria and Italy.

Notable

• Registrants for the majority of prefixes are listed as "Mass Response Service GmbH" or "Mass Response abuse handling", aligning with the AS holder.
• The 41.66.64.0/18 block is registered to "BCS Group (BCSNet)" under the netname ORG-BA1-AFRINIC, distinct from the primary Mass Response registrants.
• The inventory includes a mix of large blocks like 41.66.64.0/18 and smaller subdivisions, with some prefixes showing "unknown" registrant data in the RDAP sample.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 41.66.64.0/18
• 62.240.128.0/19
• 83.216.32.0/19
• 176.126.39.0/24
• 178.157.4.0/22
• 185.44.52.0/22
• 185.69.244.0/22
• 193.9.252.0/23
• 197.211.128.0/18
• 2a04:9540::/29

Upstream networks

• AS5405 Inter.link GmbH
• AS1764 Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH
• AS6939 Hurricane Electric LLC
• AS8220 COLT Technology Services Group Limited
• AS216265 ARISTO NETWORKS LTD
• AS48362 Stadtwerke Feldkirch
• AS8218 Zayo Infrastructure France SA
• AS13335 Cloudflare, Inc.
• AS24482 SG.GS
• AS37721 Virtual Technologies & Solutions
• AS29504 Freenet Liberec, z.s.
• AS1121 IDDQD-AS
• AS59919 Brainbox S.r.l.
• AS34549 meerfarbig GmbH & Co. KG
• AS50304 Blix Solutions AS
• AS37100 SEACOM Limited
• AS6797 GlobalConnect AB
• AS50300 CustodianDC Limited
• AS17639 Converge ICT Solutions Inc.
• AS48185 team.blue NV
• AS3741 Dimension Data

Downstream networks

• AS33992 Mass Response Service GmbH

Adjacent networks

• AS5405 Inter.link GmbH
• AS1764 Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH
• AS8220 COLT Technology Services Group Limited
• AS6939 Hurricane Electric LLC
• AS216265 ARISTO NETWORKS LTD
• AS33992 Mass Response Service GmbH
• AS48362 Stadtwerke Feldkirch
• AS8218 Zayo Infrastructure France SA
• AS13335 Cloudflare, Inc.
• AS24482 SG.GS
• AS37721 Virtual Technologies & Solutions
• AS29504 Freenet Liberec, z.s.
• AS1121 IDDQD-AS
• AS59919 Brainbox S.r.l.
• AS34549 meerfarbig GmbH & Co. KG
• AS50304 Blix Solutions AS
• AS17639 Converge ICT Solutions Inc.
• AS48185 team.blue NV
• AS37100 SEACOM Limited
• AS6797 GlobalConnect AB
• AS3741 Dimension Data
• AS50300 CustodianDC Limited

Routing security

• RPKI: 31 valid, 0 invalid and 0 not-found announcements; 21 ROAs.
• ASPA: none published.
• IRR: 81% of announcements registered; 45 route objects.
• Listed in as-sets: AS-HURRICANEV6, AS-KDDCUSTOMER2, AS-MRS, AS-SPLIZRNETWORKS-ZA, AS-VIX-MEMBERS, AS-VIX-RS, AS-VIX-RS-V6, AS13335:AS-CUSTOMERS.

Internet exchanges

• LINX LON1 — London, United Kingdom
• Peering.cz — Prague, Czech Republic
• Vienna Internet Exchange — Vienna, Austria
• Milan Neutral Access Point — Milan, Italy
• ERA-IX Vienna — Vienna, Austria